---
product_id: 492635322
title: "Hyke & Byke Eolus 800 Fill Power Goose Down Sleeping Bag -10 & -15 Degree C Ultralight Mummy Bags with ClusterLoft Base for Backpacking, Cold Weather Camping and Hiking"
price: "$673"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/492635322-hyke-and-byke-eolus-800-fill-power-goose-down-sleeping
store_origin: NZ
region: New Zealand
---

# Hyke & Byke Eolus 800 Fill Power Goose Down Sleeping Bag -10 & -15 Degree C Ultralight Mummy Bags with ClusterLoft Base for Backpacking, Cold Weather Camping and Hiking

**Price:** $673
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Hyke & Byke Eolus 800 Fill Power Goose Down Sleeping Bag -10 & -15 Degree C Ultralight Mummy Bags with ClusterLoft Base for Backpacking, Cold Weather Camping and Hiking
- **How much does it cost?** $673 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/492635322-hyke-and-byke-eolus-800-fill-power-goose-down-sleeping)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Hyke & Byke Eolus 800 Fill Power Goose Down Sleeping Bag -10 & -15 Degree C Ultralight Mummy Bags with ClusterLoft Base for Backpacking, Cold Weather Camping and Hiking

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Hyke & Byke |
| Color | Blue/Lime Green |
| Occupancy | 1 Person |
| Shape | Mummy |
| Seasons | All Seasons |
| Age Range (Description) | Adult |
| Sport | Camping & Hiking |
| Special Feature | Ultralight |
| Material | Down, Nylon |
| Fill Material | Down |
| Product Dimensions | 60"L x 28"W |
| Closure Type | Zipper |
| Item Weight | 3.4 Pounds |
| Outer Material | Nylon |
| Fabric Type | Inner and outer nylon shell with vertical baffles that allow the adjustment of the 800 fill power insulation to move where the fill is needed the most. |
| Size | Long |
| Maximum Height Recommendation | 78 Inches |
| UPC | 041966299916 |
| Item Package Dimensions L x W x H | 16 x 10 x 8 inches |
| Package Weight | 1.95 Kilograms |
| Item Dimensions  LxWxH | 10 x 7 x 7 inches |
| Brand Name | Hyke & Byke |
| Suggested Users | unisex-adult |
| Manufacturer | Hyke & Byke |
| Part Number | HB-Eolus-0F-BlueLimeGreen-Long-FBM |
| Fill Material Type | Down |

## Product Details

- **Brand:** Hyke & Byke
- **Color:** Blue/Lime Green
- **Occupancy:** 1 Person
- **Shape:** Mummy
- **Seasons:** All Seasons
- **Age Range (Description):** Adult
- **Sport:** Camping & Hiking
- **Special Feature:** Ultralight
- **Material:** Down, Nylon
- **Fill Material:** Down

## Images

![Hyke & Byke Eolus 800 Fill Power Goose Down Sleeping Bag -10 & -15 Degree C Ultralight Mummy Bags with ClusterLoft Base for Backpacking, Cold Weather Camping and Hiking - Image 1](https://m.media-amazon.com/images/I/71nrnlzk33L.jpg)

## Questions & Answers

**Q: What makes the eolus better than the snowmass**
A: Hello,

The Eolus has a higher fill rating and is lighter, so in layman's terms, bags of the same temperature rating perform the same, but this one is lower weight. Think of it as the "performance" series of our sleeping bags. 

Best,

Hyke and Byke Customer Team

**Q: How small a package does pack into?**
A: Not sure of package size , but it fits into the bottom of my Teton 4000 backpack with room to spare !!

**Q: I understand sleeping pads are at least half the battle against cold, what kind of pad have y'all had success with while using this bag?**
A: I have a 2 season thermarest which doesn't fully insulate but certainly helps. The sleeping bag itself compacts beneath you (as is reasonable) but fluffs up quickly as you rotate. In 25°F you may feel a bit of a chill from the ground but if you cinch up the top of the bag your body heat and the down will warm and counteract the cool ground temp.

It's a wonderfully warm and comfortable bag. You don't need to layer up at all. A 4 season sleeping pad would eliminate any chill due to compression.

**Q: Did anyone try the bag at 0 degrees F? How did it go?**
A: 5 degrees was the lowest it got on our trip. I was warm in long underwear top & bottom, socks and then a mid layer top. And I mean toasty.

---

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**Shop now:** [https://www.desertcart.nz/products/492635322-hyke-and-byke-eolus-800-fill-power-goose-down-sleeping](https://www.desertcart.nz/products/492635322-hyke-and-byke-eolus-800-fill-power-goose-down-sleeping)

---

*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-15*